package com.ruiyun.yuezhi.core.util;

import java.lang.reflect.Field;

/**
 * 反射工具
 * 
 * @author chentianjin
 * @date 2018年9月7日
 */
public class ReflectUtil {
	/**
	 * 获取obj对象fieldName的Field
	 * 
	 * @param obj
	 * @param fieldName
	 * @return
	 */
	public static Field getFieldByFieldName(Object obj, String fieldName) {
		for (Class<?> superClass = obj.getClass(); superClass != Object.class; superClass = superClass.getSuperclass()) {
			try {
				return superClass.getDeclaredField(fieldName);
			} catch (NoSuchFieldException e) {
			}
		}
		return null;
	}

	/**
	 * 获取obj对象fieldName的属性值
	 * 
	 * @param obj
	 * @param fieldName
	 * @return
	 * @throws SecurityException
	 * @throws NoSuchFieldException
	 * @throws IllegalArgumentException
	 * @throws IllegalAccessException
	 */
//	public static Object getValueByFieldName(Object obj, String fieldName) throws SecurityException, NoSuchFieldException, IllegalArgumentException, IllegalAccessException {
//		Field field = getFieldByFieldName(obj, fieldName);
//		Object value = null;
//		if (field != null) {
//			if (field.canAccess(obj)) {
//				value = field.get(obj);
//			} else {
//				field.setAccessible(true);
//				value = field.get(obj);
//				field.setAccessible(false);
//			}
//		}
//		return value;
//	}

	/**
	 * 设置obj对象fieldName的属性值
	 * 
	 * @param obj
	 * @param fieldName
	 * @param value
	 * @throws SecurityException
	 * @throws NoSuchFieldException
	 * @throws IllegalArgumentException
	 * @throws IllegalAccessException
	 */
//	public static void setValueByFieldName(Object obj, String fieldName, Object value) throws SecurityException, NoSuchFieldException, IllegalArgumentException, IllegalAccessException {
//		Field field = getFieldByFieldName(obj, fieldName);
//		if (field.trySetAccessible()) {
//			field.set(obj, value);
//		} else {
//			field.setAccessible(true);
//			field.set(obj, value);
//			field.setAccessible(false);
//		}
//	}
}